.demo-code{
    font-family: Consolas, 'Courier New', monospace;
    /* max-width: 1000px; */
    background-color: #222;
    padding: 10px;
    border-radius: 3px;
    margin-top: 5px;
    overflow-x: auto;
    color: #fff;
    line-height: 25px;
}
#spinBlock,#sizeBlock,#useBlock{
    padding: 15px;
    border-bottom: 1px solid #eee;
    position: relative;
}

.doc-title{
    text-align: center;
    color: #222;
    font-size: 25px;
    font-weight: bold;
}
.doc-title-s,.doc-title-ss{
    color: #222;
    font-size: 22px;
    font-weight: bold;
    margin-bottom: 10px;
}
.doc-title-ss{
    font-size: 20px;
}
.doc-text{
    color: #222;
    font-size: 18px;
    margin: 5px 0;
}
.red{
    color: #f44;
    background-color: #eee;
    padding: 0 2px;
    border-radius: 2px;
}
